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US 12,498,256 B2Granted
Inductive proximity sensor for the detection of an object and method of detecting an object
AssigneeSick AG
InventorAndreas Peter
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AssigneeSick AG
InventorAndreas Peter
Estimating the term…
An inductive proximity sensor and a method for the detection of an object having at least one coil, wherein at least one transmitted current pulse can be applied to the coil by a control and evaluation unit and the control and evaluation unit is configured to output an object determination signal, wherein the control and evaluation unit is configured to scan at least one induced voltage pulse that has been generated by the transmitted current pulse at the coil in a plurality of sections from or after the time of the application of the transmitted current pulse and to form scan values, whereby the voltage pulse is digitized, wherein the control and evaluation unit is configured to evaluate the scan values for an object detection of a metallic object, wherein the control and evaluation unit is configured to scan the transmitted current pulse that has been generated at the coil in at least two sections from or after the time of the application of the transmitted current pulse and to form transmitted current scan values, wherein the control and evaluation unit is configured to determine a rise in the current increase of the transmitted current pulse from the transmitted current scan values, and the control and evaluation unit is configured to end the transmitted current pulse in dependence on the detected increase of the transmitted current pulse.
An inductive proximity sensor for the detection of an object having at least one coil, wherein at least one transmitted current pulse can be applied to the coil by a control and evaluation unit and the control and evaluation unit is configured to output an object determination signal, wherein the control and evaluation unit is configured to scan at least one induced voltage pulse that has been generated by the transmitted current pulse at the coil in a plurality of sections from or after the time of the application of the transmitted current pulse and to form scan values, whereby the voltage pulse is digitized, and wherein the control and evaluation unit is configured to evaluate the scan values for an object detection of a metallic object,
A method of detecting an object using an inductive proximity sensor having at least one coil, wherein at least one transmitted current pulse is applied to the coil by a control and evaluation unit and the control and evaluation unit outputs an object determination signal, wherein the control and evaluation unit scans at least one induced voltage pulse that has been generated by the transmitted current pulse at the coil in a plurality of sections from or after the time of the application of the transmitted current pulse and forms scan values, whereby the voltage pulse is digitized, wherein the control and evaluation unit evaluates the scan values for an object detection of a metallic object, characterized in that the control and evaluation unit scans the transmitted current pulse that has been generated at the coil in at least two sections from or after the time of the application of the transmitted current pulse and forms transmitted current scan values, with the control and evaluation unit determining a rise in the current increase of the transmitted current pulse from the transmitted current scan values, and the control and evaluation unit ending the transmitted current pulse in dependence on the detected increase of the transmitted current pulse.
Dependencies are inferred from the claim text.